<template>

  <el-container class="home-container">
    <el-header>
      <!-- 左侧部分 -->
      <div>
        <img src="@/assets/heima.png" alt="">
        <span>
          黑马电商后台管理系统
        </span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse?'64px':'200px'">
        <!-- 切换按钮 -->
        <div class="toggle_btn" @click="toggleCollapse">|||</div>
        <el-menu :default-active="activeIndex" :unique-opened="true" class="el-menu-vertical-demo" background-color="#333744"
          router text-color="#fff" active-text-color="#409EFF" :collapse="isCollapse" :collapse-transition="false">
          <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="(item,index) in menusList" :key="index">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>

</template>

<script>
export default {
  data() {
    return {
      menusList: [],
      iconsObj: {
        "125": "iconfont icon-user",
        "103": "iconfont icon-tijikongjian",
        "101": "iconfont icon-shangpin",
        "102": "iconfont icon-danju",
        "145": "iconfont icon-baobiao"
      },
      isCollapse: false,
      activeIndex:''
    };
  },
  created() {
    this.getMenus();
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    async getMenus() {
      let { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error("获取数据失败");
      console.log(res);
      this.menusList = res.data;
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    }
  },
  watch: {
    "$route.path": {
      handler: function(val) {
        this.activeIndex = val
      },
      immediate: true
    }
  }
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.auth_txt {
  margin-right: 10px;
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.toggle_btn {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
.el-main {
  background-color: #eaedf1;
}
</style>